diff --git a/grocy.openapi.json b/grocy.openapi.json
index 85dc302d..4c753cd1 100644
--- a/grocy.openapi.json
+++ b/grocy.openapi.json
@@ -2075,6 +2075,9 @@
 					"stock_amount": {
 						"type": "integer"
 					},
+					"stock_amount_opened": {
+						"type": "integer"
+					},
 					"next_best_before_date": {
 						"type": "string",
 						"format": "date-time"
diff --git a/migrations/0046.sql b/migrations/0046.sql
index 262b1d6b..57aaf9e9 100644
--- a/migrations/0046.sql
+++ b/migrations/0046.sql
@@ -15,3 +15,14 @@ ADD default_best_before_days_after_open INTEGER NOT NULL DEFAULT 0;
 
 UPDATE products
 SET default_best_before_days_after_open = 0;
+
+DROP VIEW stock_current;
+CREATE VIEW stock_current
+AS
+SELECT
+	s.product_id,
+	SUM(s.amount) AS amount,
+	MIN(s.best_before_date) AS best_before_date,
+	IFNULL((SELECT SUM(amount) FROM stock WHERE product_id = s.product_id AND open = 1), 0) AS amount_opened
+FROM stock s
+GROUP BY s.product_id;
diff --git a/public/viewjs/components/productcard.js b/public/viewjs/components/productcard.js
index 2d55bdc8..f6467a4d 100644
--- a/public/viewjs/components/productcard.js
+++ b/public/viewjs/components/productcard.js
@@ -6,6 +6,7 @@ Grocy.Components.ProductCard.Refresh = function(productId)
 		function(productDetails)
 		{
 			var stockAmount = productDetails.stock_amount || '0';
+			var stockAmountOpened = productDetails.stock_amount_opened || '0';
 			$('#productcard-product-name').text(productDetails.product.name);
 			$('#productcard-product-stock-amount').text(stockAmount);
 			$('#productcard-product-stock-qu-name').text(productDetails.quantity_unit_stock.name);
@@ -15,6 +16,15 @@ Grocy.Components.ProductCard.Refresh = function(productId)
 			$('#productcard-product-last-used').text((productDetails.last_used || L('never')).substring(0, 10));
 			$('#productcard-product-last-used-timeago').text($.timeago(productDetails.last_used || ''));
 
+			if (stockAmountOpened > 0)
+			{
+				$('#productcard-product-stock-opened-amount').text(L('#1 opened', stockAmountOpened));
+			}
+			else
+			{
+				$('#productcard-product-stock-opened-amount').text("");
+			}
+
 			$('#productcard-product-edit-button').attr("href", U("/product/" + productDetails.product.id.toString()));
 			$('#productcard-product-edit-button').removeClass("disabled");
 
diff --git a/public/viewjs/stockoverview.js b/public/viewjs/stockoverview.js
index 74264426..25e48c80 100644
--- a/public/viewjs/stockoverview.js
+++ b/public/viewjs/stockoverview.js
@@ -193,6 +193,12 @@ $(document).on('click', '.product-open-button', function(e)
 					});
 					$('#product-' + productId + '-next-best-before-date-timeago').attr('datetime', result.next_best_before_date);
 
+					$('#product-' + productId + '-opened-amount').parent().effect('highlight', {}, 500);
+					$('#product-' + productId + '-opened-amount').fadeOut(500, function ()
+					{
+						$(this).text(L('#1 opened', result.stock_amount_opened)).fadeIn(500);
+					});
+
 					toastr.success(L('Marked #1 #2 of #3 as opened', 1, productQuName, productName));
 					RefreshContextualTimeago();
 					RefreshStatistics();
diff --git a/services/StockService.php b/services/StockService.php
index 7545b420..bcf96b62 100644
--- a/services/StockService.php
+++ b/services/StockService.php
@@ -48,6 +48,7 @@ class StockService extends BaseService
 
 		$product = $this->Database->products($productId);
 		$productStockAmount = $this->Database->stock()->where('product_id', $productId)->sum('amount');
+		$productStockAmountOpened = $this->Database->stock()->where('product_id = :1 AND open = 1', $productId)->sum('amount');
 		$productLastPurchased = $this->Database->stock_log()->where('product_id', $productId)->where('transaction_type', self::TRANSACTION_TYPE_PURCHASE)->where('undone', 0)->max('purchased_date');
 		$productLastUsed = $this->Database->stock_log()->where('product_id', $productId)->where('transaction_type', self::TRANSACTION_TYPE_CONSUME)->where('undone', 0)->max('used_date');
 		$nextBestBeforeDate = $this->Database->stock()->where('product_id', $productId)->min('best_before_date');
@@ -66,6 +67,7 @@ class StockService extends BaseService
 			'last_purchased' => $productLastPurchased,
 			'last_used' => $productLastUsed,
 			'stock_amount' => $productStockAmount,
+			'stock_amount_opened' => $productStockAmountOpened,
 			'quantity_unit_purchase' => $quPurchase,
 			'quantity_unit_stock' => $quStock,
 			'last_price' => $lastPrice,
diff --git a/views/components/productcard.blade.php b/views/components/productcard.blade.php
index 8c9fd6d9..3fa5d8d2 100644
--- a/views/components/productcard.blade.php
+++ b/views/components/productcard.blade.php
@@ -13,7 +13,7 @@
 	<div class="card-body">
 		<h3><span id="productcard-product-name"></span></h3>
 		<strong>{{ $L('Stock quantity unit') }}:</strong> <span id="productcard-product-stock-qu-name"></span><br>
-		<strong>{{ $L('Stock amount') }}:</strong> <span id="productcard-product-stock-amount"></span> <span id="productcard-product-stock-qu-name2"></span><br>
+		<strong>{{ $L('Stock amount') }}:</strong> <span id="productcard-product-stock-amount"></span> <span id="productcard-product-stock-qu-name2"></span> <span id="productcard-product-stock-opened-amount" class="small font-italic"></span><br>
 		<strong>{{ $L('Last purchased') }}:</strong> <span id="productcard-product-last-purchased"></span> <time id="productcard-product-last-purchased-timeago" class="timeago timeago-contextual"></time><br>
 		<strong>{{ $L('Last used') }}:</strong> <span id="productcard-product-last-used"></span> <time id="productcard-product-last-used-timeago" class="timeago timeago-contextual"></time><br>
 		<strong>{{ $L('Last price') }}:</strong> <span id="productcard-product-last-price"></span>
diff --git a/views/stockoverview.blade.php b/views/stockoverview.blade.php
index 77130846..76be1792 100644
--- a/views/stockoverview.blade.php
+++ b/views/stockoverview.blade.php
@@ -112,6 +112,7 @@
 					</td>
 					<td>
 						<span id="product-{{ $currentStockEntry->product_id }}-amount">{{ $currentStockEntry->amount }}</span> {{ Pluralize($currentStockEntry->amount, FindObjectInArrayByPropertyValue($quantityunits, 'id', FindObjectInArrayByPropertyValue($products, 'id', $currentStockEntry->product_id)->qu_id_stock)->name, FindObjectInArrayByPropertyValue($quantityunits, 'id', FindObjectInArrayByPropertyValue($products, 'id', $currentStockEntry->product_id)->qu_id_stock)->name_plural) }}
+						<span id="product-{{ $currentStockEntry->product_id }}-opened-amount" class="small font-italic">@if($currentStockEntry->amount_opened > 0){{ $L('#1 opened', $currentStockEntry->amount_opened) }}@endif</span>
 					</td>
 					<td>
 						<span id="product-{{ $currentStockEntry->product_id }}-next-best-before-date">{{ $currentStockEntry->best_before_date }}</span>